20 inch wheels with 5/7 drop - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1984 swb chevy · 11-21-2007, 08:47 PM

I would like to run 20x8.5 up front and 20x10 in the rear. I have an 84 c-10 . I ike the big lip look in the rear and need to know what backspace I will need front and rear so they dont rub.Any help on tire size also. Thanks for the help in advance

pcmcobra · 11-21-2007, 09:33 PM

im running that wheel combo on my 86
5.5" bs on back, and 5.25 up front.
245/40 front
295/45/20 rear
no issues at all, could probably go with a little bigger tire up front.

tvblazer78 · 11-21-2007, 09:37 PM

I have been looking for about year on what I was going to get. And I have just ordered them.

Here is what you need.

front 8.5 wheel BS 5" with 245-40-20 or 255-40-20
Back 10 wheel BS 4.5 with 295-40-20 this will give you a little dish.

Trav

Quote:

Originally Posted by 1984 swb chevy

I would like to run 20x8.5 up front and 20x10 in the rear. I have an 84 c-10 . I ike the big lip look in the rear and need to know what backspace I will need front and rear so they dont rub.Any help on tire size also. Thanks for the help in advance

1984 swb chevy · 11-21-2007, 10:32 PM

Thanks guys for the info. PCM COBRA could you tell me if you were to lower your truck more would your wheels and tires tuck with out rubbing. I am 5/6 now and may lower the rear one or two more inches Thanks again for the help I just want to make sure I know what I need before I buy.

1984 swb chevy · 11-21-2007, 10:35 PM

Hey TVBlazer78. Do you have a pic of your wheels so I can see the offset you have. will your wheels tuck without rubbing. Thanks

AirMale · 11-23-2007, 05:29 PM

Quote:

Originally Posted by tvblazer78

I have been looking for about year on what I was going to get. And I have just ordered them.

Here is what you need.

front 8.5 wheel BS 5" with 245-40-20 or 255-40-20
Back 10 wheel BS 4.5 with 295-40-20 this will give you a little dish.

Trav

I disagree here on the rear back space:
Should be 5.5 on a 10" wheel.

AirMale · 11-23-2007, 05:34 PM

rear wheel is 9.5 with 5" BS

tvblazer78 · 11-23-2007, 08:06 PM

Sorry that you do, but I have a 9.5 with 3.5 BS on it. It's a stock 12 bolt out of a 4x4 blazer. Here is the pic.

Quote:

Originally Posted by AirMale

I disagree here on the rear back space:
Should be 5.5 on a 10" wheel.

pcmcobra · 11-21-2007, 11:39 PM

ya, mine would tuck.

1984 swb chevy · 11-22-2007, 08:39 PM

Thanks again for the info. I will call and order my wheels this week.

tvblazer78 · 11-23-2007, 12:33 AM

here is one of my old 17x 9.5 BS 3.5, had to roll the lip of the fender up to make them fit..

CLASSIC87' · 11-23-2007, 09:01 PM

I have 20x10's w 5.25 BS... I was going to go 5.00 but I run the disc covers and a 1/4 spacer as well. (I use the 1/4 spacer to keep my dust covers off of the drum weights; so they dont get dented)

1984 swb chevy · 11-24-2007, 10:34 PM

Thanks again for all the info. The 5 to 5/14 inch backspace looks like the way I need to go if I want a 20x10 to tuck without rubbing. If anyone has any good pics of 20 I would like to see them.

AirMale · 11-25-2007, 06:24 AM

good move getting at least 5" backspace. Here's a pic before I installed a 4 link.

1984 swb chevy · 11-25-2007, 08:46 PM

Very nice truck Airmail. Thanks for the picture.

1984 swb chevy · 11-25-2007, 08:49 PM

Hello Airmale could you tell me what size tire you are running

SCOTI · 11-25-2007, 11:40 PM

Rear 20x10's w/the equivalent of 5" BS was dead-on for my daily 5/7 static-dropped driver..... As you can see in the pic, the rear tires are slightly tucked @ ride height.

Srubydo1986 · 11-28-2007, 10:55 PM

heres some 20s for you its on my moms truck. she didnt lower casue she loves using her truck, that and it a 4 wheel drive, but still a very nice truck

11-21-2007, 08:47 PM	#1
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	20 inch wheels with 5/7 drop I would like to run 20x8.5 up front and 20x10 in the rear. I have an 84 c-10 . I ike the big lip look in the rear and need to know what backspace I will need front and rear so they dont rub.Any help on tire size also. Thanks for the help in advance

11-21-2007, 09:33 PM	#2
pcmcobra Registered User Join Date: Aug 2006 Location: Florida Posts: 1,684	Re: 20 inch wheels with 5/7 drop im running that wheel combo on my 86 5.5" bs on back, and 5.25 up front. 245/40 front 295/45/20 rear no issues at all, could probably go with a little bigger tire up front. __________________ 1986 C10 SWB 6.0/6l90e Miami...Flee it like a native

11-21-2007, 10:32 PM	#4
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Thanks guys for the info. PCM COBRA could you tell me if you were to lower your truck more would your wheels and tires tuck with out rubbing. I am 5/6 now and may lower the rear one or two more inches Thanks again for the help I just want to make sure I know what I need before I buy.

11-21-2007, 10:35 PM	#5
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Hey TVBlazer78. Do you have a pic of your wheels so I can see the offset you have. will your wheels tuck without rubbing. Thanks

11-23-2007, 05:34 PM	#7
AirMale Senior Member Join Date: Jan 2003 Location: Atlantic City, NJ Posts: 1,073	Re: 20 inch wheels with 5/7 drop rear wheel is 9.5 with 5" BS Attached Images __________________ 86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction

11-21-2007, 11:39 PM	#9
pcmcobra Registered User Join Date: Aug 2006 Location: Florida Posts: 1,684	Re: 20 inch wheels with 5/7 drop ya, mine would tuck. __________________ 1986 C10 SWB 6.0/6l90e Miami...Flee it like a native

11-22-2007, 08:39 PM	#10
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Thanks again for the info. I will call and order my wheels this week.

11-23-2007, 12:33 AM	#11
tvblazer78 Low & Fast! Join Date: Jan 2007 Location: Knoxville, TN Posts: 3,110	Re: 20 inch wheels with 5/7 drop here is one of my old 17x 9.5 BS 3.5, had to roll the lip of the fender up to make them fit.. Attached Images __________________ Southeastern Mini Truckin' Nationals April 27 and 28, 2012 Last edited by tvblazer78; 11-23-2007 at 12:37 AM.

11-23-2007, 09:01 PM	#12
CLASSIC87' OL BLUU Join Date: Mar 2004 Location: WICHITA, KS. Posts: 1,065	Re: 20 inch wheels with 5/7 drop I have 20x10's w 5.25 BS... I was going to go 5.00 but I run the disc covers and a 1/4 spacer as well. (I use the 1/4 spacer to keep my dust covers off of the drum weights; so they dont get dented)

11-24-2007, 10:34 PM	#13
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Thanks again for all the info. The 5 to 5/14 inch backspace looks like the way I need to go if I want a 20x10 to tuck without rubbing. If anyone has any good pics of 20 I would like to see them.

11-25-2007, 06:24 AM	#14
AirMale Senior Member Join Date: Jan 2003 Location: Atlantic City, NJ Posts: 1,073	Re: 20 inch wheels with 5/7 drop good move getting at least 5" backspace. Here's a pic before I installed a 4 link. Attached Images __________________ 86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction

11-25-2007, 08:46 PM	#15
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Very nice truck Airmail. Thanks for the picture.

11-25-2007, 08:49 PM	#16
1984 swb chevy Registered User Join Date: Nov 2007 Location: New Jersey Posts: 466	Re: 20 inch wheels with 5/7 drop Hello Airmale could you tell me what size tire you are running

11-25-2007, 11:40 PM	#17
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Re: 20 inch wheels with 5/7 drop Rear 20x10's w/the equivalent of 5" BS was dead-on for my daily 5/7 static-dropped driver..... As you can see in the pic, the rear tires are slightly tucked @ ride height. Attached Images __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.* Last edited by SCOTI; 11-25-2007 at 11:41 PM.

11-28-2007, 10:55 PM	#18
Srubydo1986 The Crazy Machanic Join Date: Jan 2007 Location: Nokesville Va Posts: 1,437	Re: 20 inch wheels with 5/7 drop heres some 20s for you its on my moms truck. she didnt lower casue she loves using her truck, that and it a 4 wheel drive, but still a very nice truck __________________ 1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) 1970 chevelle 2dr sedan Latest update June 24 2007. *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.